Alexander gordon



(No Model.)

A. GORDON.

LATHE.

No. 340,207. Patented Apr, 20, 1886.

Inventor Witnesses si* @10N Attorney UNITED STATES ATENT FFICE,

ALEXANDER GORDON, OE HAMILTON, OHIO, As'siGNOR 'rO THE NILEs rrOOL WORKS, OE SAME PLACE.

LATHE.

l SPECIFICATION forming part of Letters Patent No. 340,207, dated April 20, 1886.

Application filed December 10,1884. Serial No. 150,046. `(No model.)

To all whom, it may concern:

Be it known that I, ALEXANDER GORDON, a subject ot' the Queen of Great Britain, and a resident of Hamilton, Butleicounty, Ohio, have invented certain new and useful Improvements in Lathes, of which the following is a specification.

This invention pertains to lathes for turning carwheels upon their axles; and it relates vto improvements inthe means for the support of the ends of the axles in the head-stocks of the lathe. In returning car-wheels it is found that the old axles vary in some respects, and that consequently the saine method of support is not alwaysapplicable.

By means of my improvements a single carwheel lathe may beso constructed as to enable the car-axle to be supported, at the will ofthe operator, in either one of several different modes, thus permitting of a choice vof the mode of support best adapted to the individual peculiarities of theaxle in hand. Thus the axle may be carried on ordinary conical centers in case the old centers of the axle are in good condition and the wheels require but light re-turning; or the axle may be carried by its own journals running loosely in bearings formed by the jaws of a chuck which does not rotate, provided the old axle-journals are in good form; or, in case the axle-journals are in bad shape, the journals may have the chuck-jaws grasp them tightly, and the chuck may revolve; or one end of the axle may he supported by one mode while the other end is supported by one of the other modes.

I am cognizant of application No. 145,004, filed October 8, 1884, by George T. Reiss, ot' Hamilton, Ohio, for United States Letters Patent for improvements in lathes. Iamfully cognizant ofapplication No. 137,175, filed July 9, 1684, .by John B. Williams, of Chicago, Illinois, for United States Letters Patent for improvement in lathes. Whatever matter of invention may be found set forth in his said application I concede as being the invention ot' said Williams. The entire subject-matter of my application was conceived in view of the contents ot' the said Williams application and said Reiss application, and was designed to constitute highlyimportant improvements upon their devices.

vThe improvements will be readily under-` stood from the following description, taken in connection with the accompanying drawings, in which- Y Figure lis a front lelevation of portions of a lathe, illustrating my improvements; Fig. 2, a vertical longitudinal section of the parts of the' left-hand head-stock; Fig. 3, a face view lof the left-hand headstock parts, a portion of the face-plate, a portion of the front plate, and a portion of the chuck-body being broken away; Fig. 4, a vertical longitudinal section of the parts ofthe right-hand head-stock; Fig. 5, a view of the interior of the right-hand chuck; Fig. 6, a face view of the right-hand chuck; Fig. 7, a side view of the chuck-jaw with compensatingpad, and Fig. 8 a front view o fsame.

In the drawings, A represents a lathe-bed; B, a head-stock; C,a lathe-spindle fitted to revolve therein; D, -the hollow nose of the spindle; E, the geared face-plate fitted on the nose; F, a front plate to the spindle, for retaining the faceplate; G, a set-'screw in the face-plate, for locking the same to the spindle; H, a set-screw in the head-stock bearing, for locking the spindle against rotation; I, center spindles in each head-stock; J, the concentric bore of the cavity of the spindle-nose; K, a chuck seating in the bore ot' the spindle; L, thejaws of this chuck; M, longitudinallysliding wedges for actuating these chuck-jaws; N, a threaded sleeve engaging threaded heels of the chuck-wedges; O, a pinion journaled in the spindle and engaging a geared flange on this threaded sleeve; P, thrust-caps on the lathe-centers, held in the center spindles; Q, the right-hand headstock; R, a fixed hollow nose projecting from .the same; S, a geared face-plate fitted to revolve upon this nose; T, a front plate bolted to this nose to retain the face-plate; U, the bore of this nose; V, achuck seating within this bore; W, the jaws of this` chuck; X, the chuck-ring; Y, apinionengaging teeth in the chuck-ring; Z, inclines inthe chuck-ring, engaging the chuck-jaws; a, the face-plate gears; b, the drivers, and c pads secured in the ends of thechuck-jaws.

Referring to the left-hand head-stock, by revolving the pinion O the chuck-wedges are moved inward or outward, and the chuck-jaws open and close. The chuck-jaws being open, the interior of the chuck presents a smooth bore, through which the center spindle may slide, if desired. The projecting journal of the car-axle may beinserted into the bore ofthe chuck, and the lathe-center may engage the center of' the axle, while the car-wheel comes close up against the face-plate, to be engaged by the driver. In practice equalizing-drivers will be used with both face-plates. Instead of the axle being supported, as mentioned, upon the lathe-centers, the chuck -jaws may be brought down upon the axle journal, andthe axle be thereby `firmly and concentrically clasped within the spindle, the spindle revolving with the face plate, which is to be locked to it. The face-plates are to be driven by pinions upon the back shaftin the manner common with driving-wheel lathes. Instead of gripping the axle-journal firmly in the chuck, the chuck may be brought down closely, but not tightly, so as to form a bearing in which the axle-journal may be revolved, the spindle and its chuck being locked stationary, while the face-plate revolves freely upon it. While the axle thus revolves in the chuck as a bearing, the thrust-cap P is adjusted up against the end ofthe axle, to serve as a thrustbearing. In one of the modes of operation referred to theaxle revolved on the lathe-center, by another mode the axle revolved upon its journal in the stationary chuck-jaws, and by another mode the axle was clasped firmly and revolved with the spindle. By still another mode the chuck may be firmly tightened upon the axle, the spindle locked against rotation, the faceplate revolved freely upon the spindle, and the axle and chuck revolved, the real nearing of rotation being'the periphery ot' the chuck where it bears within the bore ofthe spindle.

The lathe may have both ofits head-stocks constructed after the manner of' the left-hand head-stock; or the right-hand head-stock may be an ordinary tail-stock in case the lathe is designed for turning but one wheel at a time.

I have designed the right-hand head-stock to perform the office of' a dead-center tailstock, a dead-hearing tail-stock, anda driving headstock. l

Referring to the right-hand head-stock. the chuck in this case will be recognized as of the common earn-ring form, and it is fitted to re volve freely within the fixed nose of the spindle, while it is clamped firmly upon the caraxle, thereby forming at its periphery the real journal of rotation;l or it may be clamped closely, but not tightly, upon the car-axle, and thereby serve as a fixed bearing, in which the car-axle may revolve, the face-plate in all cases freely revolving upon its nose, and the center spindle serving precisely as indicated in regard to the left-hand head-stock.

I claim as my invention- 1. In a lathe, the combination of a headstoek, a lathespindle fitted to rotate therein and to be locked against rotation and provided with a frontal nose, a center spindle fitted to slide axially in said lathe-spindle, a faceplate fitted to rotate loosely upon said nose and to be locked thereto, so as to rotate with it, a chuck-body having a cylindrical periphery fitting the bore of said nose and having a concentric bore fitting the said sliding center spindle, and a pinion-spindlejournaled in and projecting outside of the lathe-spindle, substantially as and for the purpose set forth.

2. In a lathe, the combination ot' aheadstock, a lathe-spindle fitted to rotate therein and to be looked against rotation and provided with a frontal nose. a center spindle fitted to slide axiallyin said lathe-spindle, a face-plate fitted to rotate loosely upon said nose aud to be locked thereto, so as to rotate with it, and a chuck-bodyhaving a cylindrical periphery fitting the bore ot' said nose and having a concentric bore fitting said sliding spindle, substantially as 'and for the purpose set forth.

3. In a lathe, the combination ot' a headstock, a lathe-spindlefitted to be rotated therein and to be locked against rotation and provided with a frontal nose, a centerspindle fitted to slide axiallyin said lathe-spindle. a faceplate fitted to rotate loosely upon said nose and to be locked thereto, so as to rotate with it, and a chuck disposed Within said nose, substantially as and for the purpose set forth.

4. In a lathe, the combination of a head` stock supportinga frontal nose provided with 'an exterior cylindrical bearing-sul-'lace for a face-plate and a concentric interior bearingsurface for a chuck, a tace-plate fitted to revolve upon the exterior bearingsurface of said nose, and a chuck-body fitted to revolve in the interior bearing-surlace of such nose, substantially as and for the purpose set i'orlh.

5. In a lathe, the combination of a headstock supporting a frontal nose, a centerspinldle supported by said head-stock axially with reference tosaid nose, and acylindrical chuckbody fitting the bore of said nose and having a concentric bore fitting said center spindle, substantially as and for the purpose set forth.

ALEXANDER GORDON.

Witnesses:

J. W. SEE, W. A. SEWARD.

IIO 

